CN221167886U - Dock combined waterproof curtain - Google Patents

Abstract

The utility model provides a dock combined waterproof curtain which comprises a permanent waterproof assembly, wherein the permanent waterproof assembly comprises a plurality of steel sheet piles, and the steel sheet piles are sequentially connected at least along the length direction of a dock to form a first blocking structure; the sand filling device comprises a plurality of pre-drilled holes, wherein the pre-drilled holes are filled with backfill sand structures; the jet grouting piles are arranged in double rows and are respectively arranged on two sides of the first blocking structure, and the jet grouting piles are intersected with the pre-drilling hole part; the jet grouting pile and the pre-drilled hole are arranged close to the middle lower part of the steel sheet pile. In the utility model, a water-stop curtain system is formed by combining steel sheet piles and high-pressure jet grouting piles. For the small particles in the deep sea water and the soil, which can not be blocked due to the limited length of the steel sheet pile, the water stop sealing is performed by adopting the jet grouting pile, and particularly, aiming at the region containing more large-grain-size rubble, the steel sheet pile is used for replacing the jet grouting pile, so that the water stop effect is achieved.

Description

Dock combined waterproof curtain

Technical Field

The utility model relates to the technical field of dock type waterproof curtains, in particular to a dock type combined waterproof curtain.

Background

The waterproof curtain engineering is used for providing a dry working environment for engineering construction or performing waterproof and seepage-proof functions for engineering, and the high-pressure jet grouting pile curtain is a common waterproof curtain form.

The high-pressure injection grouting is to spray and drill a grouting pipe with a special nozzle to a preset depth, then to spray and cut soil body at high speed by using a high-pressure grouting pump, to mix the sprayed slurry with the soil body, and to form a relatively uniform and high-strength reinforcement body in the foundation after coagulation and hardening. The single tube method, the double tube method and the triple tube method are classified according to different mechanical equipments.

The construction method of high-pressure injection grouting specifically comprises the following steps:

① And positioning the drilling machine according to the measurement. And (3) moving the jet grouting pile machine to a specified pile position, aligning the drill bit to the center of the hole site, and simultaneously placing the drilling machine stably.

② And (5) preparing cement paste. When the pile driver is shifted, cement paste is stirred according to the designed and determined mixing ratio. Firstly, adding water into a barrel, then pouring cement and an external admixture into the barrel, starting a stirrer to stir for 10-20 minutes, and then filtering twice and flowing into a slurry barrel for standby when grouting is carried out.

③ Drilling and setting down the grouting pipe. The process comprises the following steps: and starting the drilling machine, and simultaneously starting the high-pressure slurry pump to convey cement slurry at low pressure, so that the drill rod vibrates along the guide frame, the jet flow forms holes to sink, and the grouting pipe can be penetrated by the jet pipe by means of jet or vibration until the pile bottom is designed to be high.

④ And (5) rotating and lifting the gunite pipe. After the guniting pipe is sunk to the designed depth, the drilling is stopped, the in-situ guniting is carried out for 30 seconds, the air pressure pipe is connected, the high-pressure slurry pump, the air compressor and the drilling machine are started to rotate, the pressure, the flow and the air quantity are controlled by the instrument to respectively reach the preset values, the rotary jetting and the lifting are continued until the expected reinforcement height is reached, and the rotary jetting and the lifting are stopped.

The high-pressure jet grouting pile waterproof curtain can be used as seepage prevention and water stopping for underground water and seawater, and is suitable for soil layers such as silt, mucky soil, cohesive soil, loess, sandy soil, artificial filling soil, broken stone soil and the like. However, when the soil contains more large-grain-size stone, the cement slurry is not suitable for use, and in addition, the cement slurry is easy to pollute the environment when the high-pressure jet grouting pile is constructed, the cost is high, and the construction period is long.

Disclosure of utility model

The utility model aims to provide a dock combined waterproof curtain, which is formed by combining steel sheet piles and jet grouting piles.

In order to achieve the technical effects, the utility model is realized by the following technical scheme.

A dock combined waterproof curtain, which comprises,

The permanent water stop assembly comprises a plurality of steel sheet piles which are sequentially connected at least along the length direction of the dock to form a first blocking structure;

the sand filling device comprises a plurality of pre-drilled holes, wherein the pre-drilled holes are filled with backfill sand structures;

The jet grouting piles are arranged in double rows and are respectively arranged on two sides of the first blocking structure, and the jet grouting piles are intersected with the pre-drilling hole part;

the jet grouting pile and the pre-drilled hole are arranged close to the middle lower part of the steel sheet pile.

In this technical scheme, utilize the steel sheet pile to form permanent stagnant water subassembly, the steel sheet pile is nevertheless intensity is big, and it is then difficult to block to tiny granule etc. so cooperation jet grouting pile when this, it seals to realize the stagnant water, and then both cooperations, make up for the shortages, have reached the stagnant water effect.

In the technical scheme, aiming at the area containing more large-grain-size rubble, the steel sheet piles are used for replacing the jet grouting piles, so that the strength of the jet grouting piles is improved, the service life of the jet grouting piles is prolonged, and the cost is saved.

In the technical scheme, firstly, a single-row Larson steel sheet pile is driven to serve as a permanent water stopping system, then construction is carried out at the bottom end of the steel sheet pile in a high-pressure grouting mode, and two rows of jet grouting piles are driven to strengthen the water stopping effect of the bottom of the steel sheet pile. The permanent water-stop steel sheet pile and the combined water-stop curtain form of the high-pressure jet grouting pile arranged at the bottom of the permanent water-stop steel sheet pile are adopted, so that the workload of the high-pressure jet grouting pile is greatly reduced, the defects of long construction period, high construction cost and easiness in pollution of the conventional high-pressure jet grouting pile are effectively avoided, the long maintenance period of the conventional high-pressure jet grouting pile is avoided, and the construction of the upper structure is realized in advance.

As a further improvement of the utility model, the dock is provided with a turning angle, and the dock further comprises a second blocking structure, wherein the second blocking structure is arranged perpendicular to the first blocking structure.

In this technical scheme, to the corner, set up two vertically and block the structure for the intensity and the stagnant water of corner seal the effect better.

As a further improvement of the utility model, the first blocking structure and the second blocking structure are the same, each steel sheet pile comprises a plurality of U-shaped steel sheets which are connected in sequence, and openings between the adjacent U-shaped steel sheets are opposite.

In this technical scheme, select for use U shaped steel board, it sets up the opening, compares in solitary platelike structure, and the reinforcing area increase of its formation, and U shaped steel board has the steel sheet of a plurality of directions for whole stagnant water and enhancement effect are better.

As a further improvement of the utility model, the cross section of the U-shaped steel plate is in a necking structure with gradually smaller width, and the width of the opening of the U-shaped steel plate is the largest.

In the technical scheme, the opening of the U-shaped steel plate is widest, and the stress surface and the bearing surface of the whole U-shaped steel plate are increased at the moment, so that the strength is increased; the U-shaped steel plate is of a semi-open structure, and the bottom of the U-shaped steel plate can be used for sealing water and isolating the outside.

As a further improvement of the utility model, the U-shaped steel plate comprises a bottom plate, two ends of the bottom plate form side plates extending outwards, and an included angle of 120-160 degrees is formed between the side plates and the bottom plate.

In this technical scheme, form the obtuse angle, bearing area is bigger, if be less than 120, the curb plate slope is too steep, and large granule lump stone is difficult for getting into, extrudees easily, and if the angle is greater than 160, the curb plate is outside the position more, although the area increases, when the lump stone is great, is extruded outwards easily, leads to U shaped steel sheet impaired, so the angle should not be too big.

As a further improvement of the utility model, the adjacent U-shaped steel plates are connected with each other and the side plates on the same side are connected with each other to form a blocking structure with an opening which is bigger and the height of the blocking structure is the sum of the heights of the 2U-shaped steel plates.

In this technical scheme, utilize U type homonymy curb plate to connect for it forms bigger U shaped steel board, and then the first permanent stagnant water subassembly that forms of stopping the structure formation this moment, and the stagnant water scope is big, is equivalent to the stagnant water piece that forms great curve structure, for follow-up jet grouting pile etc. the joining, provides better space.

As a further improvement of the utility model, the side plates extend outwards to form a hook structure with hooks, and the side plates are connected through the hooks with opposite directions between the adjacent U-shaped steel plates.

In the technical scheme, a simple hook structure is selected, specifically, the hook forms a transition part by outwards extending a side plate, an L-shaped structure is added to the side part of the transition part to form the hook, an inclined plane is formed on the opposite side of the transition part in the L-shaped structure, and after the hook structure is connected, the hook is limited and clamped in the inclined plane, so that the connection strength is ensured.

As a further improvement of the utility model, gaps are arranged between a plurality of pre-drilled holes and between adjacent pre-drilled holes, and the length of the gaps is 5-12mm.

In the technical scheme, the purpose of the gap between the pre-drilled holes is to enable a certain position for the jet grouting pile, and the position is not too large or too small at the moment, so that 5-12mm is selected.

As a further improvement of the utility model, the rotary jetting piles are partially overlapped between the same rows.

In this technical scheme, partly overlap between a plurality of jet grouting piles of same row, its purpose is superimposed each other, increases the stagnant water and the intensity of whole jet grouting pile, makes the stagnant water effect reinforcing of steel sheet pile lower part in simultaneously.

As a further development of the utility model, along the first blocking structure, between two rows of jet grouting piles there is a partial overlap, the overlap area being one quarter to one third of the cross section of the jet grouting piles.

In the technical scheme, the two rows of jet grouting piles are partially overlapped again, so that the water stopping effect is further improved, and the overlapped area is one third to one fourth, so that the water stopping area formed by the jet grouting piles is reasonable.

Drawings

FIG. 1 is a schematic view of a dock assembled waterproof curtain according to the present utility model;

FIG. 2 is a cross-sectional view of a dock assembled waterproof curtain according to the present utility model;

FIG. 3 is an assembly view of a first blocking structure and a second blocking structure provided by the present utility model;

FIG. 4 is an assembled view of the hook structure provided by the present utility model;

FIG. 5 is a schematic view of a pre-drilled hole according to the present utility model;

In the figure:

100. A permanent water stop assembly; 110. steel sheet piles; 200. a first blocking structure; 300. pre-drilling holes; 400. jet grouting piles; 500. a second blocking structure; 600. u-shaped steel plates; 610. a bottom plate; 620. a side plate; 630. a hook structure.

Detailed Description

The present utility model will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present utility model, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present utility model by those skilled in the art.

In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The terms "mounted," "connected," and "relatively fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.

Referring to fig. 1-3, a dock assembled waterproof curtain according to the present embodiment includes,

The permanent water stop assembly 100, wherein the permanent water stop assembly 100 comprises a plurality of steel sheet piles 110, and the steel sheet piles 110 are sequentially connected at least along the length direction of the dock to form a first blocking structure 200;

the number of the pre-drilled holes 300 is several, and the pre-drilled holes 300 are filled with backfill sand structures;

The jet grouting piles 400 are arranged in double rows, are respectively arranged at two sides of the first blocking structure 200, and the jet grouting piles 400 are partially intersected with the pre-drilled holes 300;

the jet grouting pile 400 and the pre-drilled hole 300 are disposed near the middle lower portion of the steel sheet pile 110.

In this embodiment, utilize the steel sheet pile to form permanent stagnant water subassembly, the steel sheet pile is nevertheless intensity is big, and it is then difficult to block to tiny granule etc. so cooperation jet grouting pile when this, it seals to realize the stagnant water, and then both cooperations, make up for the shortages, has reached the stagnant water effect.

In the embodiment, aiming at the area containing more large-grain-size rubble, the steel sheet piles are used for replacing the jet grouting piles, so that the strength of the jet grouting piles is improved, the service life of the jet grouting piles is prolonged, and the cost is saved.

In the embodiment, firstly, a single-row Larson steel sheet pile is driven to serve as a permanent water stopping system, then a high-pressure grouting mode is adopted at the bottom end of the steel sheet pile for construction, and two rows of jet grouting piles are driven to strengthen the water stopping effect of the bottom of the steel sheet pile. The permanent water-stop steel sheet pile and the combined water-stop curtain form of the high-pressure jet grouting pile arranged at the bottom of the permanent water-stop steel sheet pile are adopted, so that the workload of the high-pressure jet grouting pile is greatly reduced, the defects of long construction period, high construction cost and easiness in pollution of the conventional high-pressure jet grouting pile are effectively avoided, the long maintenance period of the conventional high-pressure jet grouting pile is avoided, and the construction of the upper structure is realized in advance.

To ensure stability at the corners, the dock is provided with a turning angle, and a second blocking structure 500 is further included, the second blocking structure 500 being disposed perpendicular to the first blocking structure 200.

In this embodiment, to the corner, set up two vertically and block the structure for the intensity and the stagnant water of corner seal effect are better.

For convenience of mass production and better use, the first blocking structure 200 and the second blocking structure 500 are the same, and each of them includes a plurality of steel sheet piles 110 formed by sequentially connecting U-shaped steel sheets 600, and openings between adjacent U-shaped steel 600 sheets are opposite.

In this embodiment, a U-shaped steel plate is selected, which is provided with an opening, and compared with a single plate-shaped structure, the reinforcing area formed by the U-shaped steel plate is increased, and the U-shaped steel plate has multiple steel plates in directions, so that the whole water stopping and reinforcing effects are better.

Referring to the drawings, the cross section of the U-shaped steel plate 600 has a reduced structure with gradually smaller width, and the width of the opening of the U-shaped steel plate 600 is the largest.

In the embodiment, the opening of the U-shaped steel plate is widest, and the stress surface and the bearing surface of the whole U-shaped steel plate are increased, so that the strength is increased; the U-shaped steel plate is of a semi-open structure, and the bottom of the U-shaped steel plate can be used for sealing water and isolating the outside.

Specifically, the U-shaped steel plate 600 includes a bottom plate 610, two ends of the bottom plate 610 form side plates 620 extending outwards, and an included angle of 120 ° -160 ° is formed between the side plates 620 and the bottom plate 610.

In this embodiment, an obtuse angle is formed, the bearing area is larger, if the bearing area is smaller than 120 °, the inclination of the side plate is too steep, large-particle lump stones are not easy to enter and are easy to squeeze, and if the bearing area is larger than 160 °, the outward positions of the side plates are more, although the bearing area is increased, when the lump stones are larger, the bearing area is easy to squeeze outwards, and the U-shaped steel plate is damaged, so that the bearing angle is not too large.

Further, the adjacent U-shaped steel plates 600 are connected to each other by the side plates 620 on the same side, so that a blocking structure is formed in which the opening is enlarged and the height is the sum of the heights of the 2U-shaped steel plates.

In this embodiment, utilize U type homonymy curb plate to connect for it forms bigger U shaped steel board, and then the first permanent stagnant water subassembly that forms of stopping the structure formation this moment, and the stagnant water scope is big, is equivalent to the stagnant water piece that forms great curve structure, for follow-up jet grouting pile etc. the joining, provides better space.

To achieve the connection, the side plates 620 extend outwards to form a hook structure 630 with hooks, and the side plates 620 are connected with each other by the hooks with opposite directions between the adjacent U-shaped steel plates 600.

In this embodiment, a simple hook structure is selected, specifically, the hook extends outwards through the side plate to form a transition part, an L-shaped structure is added to the side part of the transition part to form the hook, and an inclined plane is formed on the opposite side of the transition part in the L-shaped structure, so that after the hook structure is connected, the hook is limited and clamped in the inclined plane, and the connection strength is ensured.

Specifically, gaps are arranged between a plurality of pre-drilled holes and between adjacent pre-drilled holes, and the length of each gap is 5-12mm. The purpose of the gap between the pre-drilled holes is to let a certain position for the jet grouting pile, and the position is not too large or too small, so 5-12mm is selected.

To increase stability, the jet grouting piles 400 are partially overlapped between the same rows. In this embodiment, the multiple jet grouting piles in the same row are partially overlapped, so as to overlap each other, increase the water stop and strength of the whole jet grouting pile, and enhance the water stop effect of the middle lower part of the steel sheet pile.

For two rows of jet grouting pile structures, the two rows of jet grouting pile structures are partially overlapped, and the overlapped area is one quarter to one third of the cross section of the jet grouting pile 400. In the embodiment, the two rows of jet grouting piles are partially overlapped again, so that the water stopping effect is further improved, and the overlapped area is one third to one fourth, so that the water stopping area formed by the jet grouting piles is reasonable.

The principle of the utility model is as follows:

Referring to fig. 1, this embodiment relates to a water-stop curtain formed by combining steel sheet piles and high-pressure jet grouting piles in a dock area, wherein a single-row Larson steel sheet pile is firstly driven to serve as a permanent water-stop system, and then 2 rows of jet grouting piles are constructed at the bottom end of the steel sheet pile in a high-pressure grouting manner to strengthen the water-stop effect of the bottom of the steel sheet pile. The permanent water-stop steel sheet pile and the combined water-stop curtain form of the high-pressure jet grouting pile arranged at the bottom of the permanent water-stop steel sheet pile are adopted, so that the workload of the high-pressure jet grouting pile is greatly reduced, the defects that the construction period of the conventional high-pressure jet grouting pile is long (the construction speed of the water-stop steel sheet pile is faster than that of the high-pressure jet grouting pile), the construction cost is high and pollution is easy to cause are effectively avoided, the long maintenance period (28 days) of the conventional high-pressure jet grouting pile is avoided, and the construction of the superstructure is realized in advance.

In the utility model, the dock engineering waterproof curtain adopts a combination mode of combining steel sheet piles with high-pressure jet grouting piles, and the waterproof curtain is mainly divided into two modes:

(1) Dock entrance: elevation of waterproof curtain bottom: -34.00m, waterproof curtain top elevation: and a dock chamber bottom plate structure bedding surface.

(2) Wing expanding parts at two sides of a dock entrance: waterproof curtain top elevation: +1.50m, and the bottom elevation is not equal from-16 to-24.3 m.

In the construction of the utility model, the main process is introduced as follows:

1. Construction of steel sheet piles

(1) Pre-drilling construction

The rotary drilling rig adopts a cylinder type drilling bucket. And after the drilling machine is embedded with the pile casing, adjusting the verticality of the drill rod, and drilling. When the drill bit descends to a preset depth, the drill bucket is rotated and pressure is applied to squeeze soil and slag into the drill bucket, and the instrument automatically displays that the barrel is full, the bottom of the drill bucket is closed, and the drill bucket is lifted to discharge soil at a stacking place.

The utility model adopts a two-sequence hole forming method to preform 1, 3, 5, 7, 9 and 11 and then form 2, 4, 6, 8 and 10 holes, particularly shown in figure 5, wherein the holes are firstly drilled with single numbers and then drilled with double numbers.

(2) Positioning pile and guide frame construction

Since the steel sheet pile 110 is driven along the straightness of the pile, the position and verticality of the pile will have a great influence on the pile foundation of the whole steel sheet pile, so that the pile is driven carefully, especially the verticality of the pile body, and the pile body is required to be controlled to a minimum error.

When piling, two theodolites are erected on the front face and the side face of the pile frame, the perpendicularity of the pile is corrected, the hammer, the pile cap and the pile are kept on the uniform longitudinal axis, then 1-2 m of pile is driven in the air, and the pile is formally piled after correcting the perpendicularity again. In the beating process, the perpendicularity or the inclination of the pile is closely observed and controlled, and the error is controlled to pile within the error range. After the setting of the positioning pile is finished, installing guide beams, which are installed in two directions by adopting 2 sections of 20 steel and welded on the positioning pile, wherein the verticality of the guide beams is ensured by installing the guide beams, the width of the guide beams is slightly larger than the thickness of the sheet pile by 3-5 cm, and the setting length of the guide beams each time is determined according to the specific construction condition.

(3) Pile sinking construction of steel sheet pile

① And the crane lifts the steel sheet pile to the vicinity of the guide beam, clings to the guide beam, ensures the perpendicularity of the steel sheet pile, and measures and controls the perpendicularity of the pile by two theodolites. Waiting until the pile is vertical and clings to the guide beam, and then driving the pile to the designed elevation by a vibrating hammer. The next pile is firstly inserted into the buckling groove of the steel sheet pile, then the steel sheet pile is closely attached to the guide beam, then the perpendicularity of the pile is checked, if the pile meets the requirements, piling is carried out, and if the pile is unsuitable, some minor adjustments are carried out until the pile meets the requirements, and piling is carried out.

② And in the piling construction stage, the 50t crawler crane is utilized to vertically hoist the hydraulic vibration hammer, the hydraulic vibration hammer slowly moves, the hammer bottom clamping head is aligned to the upper edge of the steel sheet pile, the hydraulic vibration hammer slowly falls down to hook, and after the clamping head notch enters the pile top, the hydraulic clamping head is controlled to clamp the pile top.

③ And (3) vertically lifting the vibrating hammer and the steel sheet pile, lowering the pile at the good pile position, and calibrating the perpendicularity or gradient of the pile and the plane position of the pile to enable the pile to sink by itself. If the pile position has errors, the pile is pulled up to be calibrated in place, meanwhile, the perpendicularity or the inclination of the pile is controlled, the pile is planted in place, and the errors are controlled to be piled in the error range.

④ In the vibration sinking process of the steel sheet pile, a measurer has to measure and control the deflection and elevation of the steel sheet pile by using a theodolite, and meanwhile, a commander has to observe the direction of the top of the steel sheet pile so as to ensure the line type and the verticality of piling the steel sheet pile

⑤ And the steel sheet pile adopts a construction scheme of inserting and driving one by one in consideration of factors such as lifting equipment, vibration equipment and the like. In the inserting and driving process, the construction key points of 'pile inserting is straight, scattered, i.e. corrected and folded' are observed.

2. High-pressure jet grouting pile construction

The diameter of the high-pressure jet grouting pile is phi 800mm, the construction is carried out by adopting a new two-pipe method, the top standard of the jet grouting pile is 2.0m higher than the bottom standard of the steel plate pile, and the bottom standard is-34.2 m.

The utility model adopts the form of the combined waterproof curtain of the permanent waterproof steel sheet pile and the high-pressure jet grouting pile, effectively shortens the construction period, and particularly aims at the area containing more large-grain-size block stones, and the steel sheet pile is used for replacing the jet grouting pile to make up for the advantages and make up for the short, thereby achieving the waterproof effect. Aiming at the situation that the steel sheet pile has limited length and can not block the tiny particles in the deep sea water and the soil, the jet grouting pile is adopted for water-stop sealing.

(3) Progress benefit

The construction of the main pump house structure is a key of dock construction, and the main pump house structure is important for project implementation whether from the aspect of size or internal construction. The combined waterproof curtain construction scheme of the permanent waterproof steel sheet pile and the high-pressure jet grouting pile is adopted to realize the construction of the foundation as soon as possible, and is favorable for developing the construction of the main pump house as soon as possible.

According to the original construction scheme of the waterproof curtain in the form of the high-pressure jet grouting pile, 17 days are expected to be required for completing the waterproof curtain below the main pump room structure, 10 days are required for the construction period of the combined waterproof curtain adopting the steel sheet pile and the compaction grouting, and the time (28 days) for curing the high-pressure jet grouting pile can be avoided by adopting the combined waterproof curtain. Comprehensively considering, the construction time of the main pump house structure is advanced by 35 days.

(4) Economic benefit

Due to the adoption of the combined waterproof curtain, the construction of the main pump house structure can be started in advance, so that the finishing period of the whole project can be directly shortened, and the personnel management cost of the project can be greatly saved.

In addition, the combined waterproof curtain is adopted, and the main pump house structure construction is started in 7 months through budget, so that the main pump house structure construction can be completed before winter according to a construction plan, and various inconveniences caused by the large-size structure winter construction and the increase of costs of constructors, equipment, materials and the like in winter are effectively avoided.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. A dock combined waterproof curtain is characterized by comprising,

The permanent water stop assembly comprises a plurality of steel sheet piles which are sequentially connected at least along the length direction of the dock to form a first blocking structure;

the sand filling device comprises a plurality of pre-drilled holes, wherein the pre-drilled holes are filled with backfill sand structures;

The jet grouting piles are arranged in double rows and are respectively arranged on two sides of the first blocking structure, and the jet grouting piles are intersected with the pre-drilling hole part;

the jet grouting pile and the pre-drilled hole are arranged close to the middle lower part of the steel sheet pile.

2. The dock-combined waterproof curtain according to claim 1, further comprising a second blocking structure when the dock is provided with a turning angle, wherein the second blocking structure is arranged perpendicular to the first blocking structure.

3. The dock combined waterproof curtain according to claim 2, wherein the first blocking structure and the second blocking structure are the same, each of the first blocking structure and the second blocking structure comprises a steel sheet pile formed by a plurality of sequentially connected U-shaped steel sheets, and openings between the adjacent U-shaped steel sheets are opposite.

4. The dock combined waterproof curtain according to claim 3, wherein the cross section of the U-shaped steel plate is in a reduced structure with gradually smaller width, and the width of the opening of the U-shaped steel plate is the largest.

5. The dock combined waterproof curtain according to claim 4, wherein the U-shaped steel plate comprises a bottom plate, two ends of the bottom plate form side plates extending outwards, and an included angle of 120 ° -160 ° is formed between the side plates and the bottom plate.

6. A dock assembled waterproof curtain according to claim 3, wherein adjacent U-shaped steel plates are connected to each other by a side plate on the same side to form a blocking structure having an opening which is enlarged and a height which is the sum of the heights of the 2U-shaped steel plates.

7. The dock assembled waterproof curtain of claim 6, wherein the side plates extend outwards to form a hook structure with a hook buckle, and the side plates are connected through the hook buckle with opposite directions between the adjacent U-shaped steel plates.

8. The dock assembled waterproof curtain according to claim 1, wherein gaps are arranged between a plurality of pre-drilled holes and between adjacent pre-drilled holes, and the length of the gaps is 5-12mm.

9. The dock assembled waterproof curtain according to claim 1, wherein the rotary spraying piles are partially overlapped with each other between the same rows.

10. The dock-assembled waterproof curtain of claim 1, wherein the two rows of jet grouting piles are partially overlapped along the first blocking structure, and the overlapping area is one-fourth to one-third of the cross section of the jet grouting piles.